add led handling for m5atom

lib/buttons/GwButtons.cpp

@@ -1,6 +1,7 @@
 #include "GwButtons.h"
 #include "GwHardware.h"
 #include "GwApi.h"
+#include "GwLeds.h"
 
 class FactoryResetRequest: public GwMessage{
     private:
@@ -50,6 +51,7 @@ void handleButtons(void *param){
     const unsigned long OFF_TIME=20;
     const unsigned long REPORT_TIME=1000;
     const unsigned long HARD_REST_TIME=10000;
+    GwLedMode ledMode=LED_OFF;
     while(true){
         delay(10);
         int current=digitalRead(GWBUTTON_PIN);
@@ -58,6 +60,10 @@ void handleButtons(void *param){
             if (lastPressed != 0 && (lastPressed+OFF_TIME) < now){
                 lastPressed=0; //finally off
                 firstPressed=0;
+                if (ledMode != LED_OFF){
+                    setLedMode(LED_GREEN); //TODO: better "go back"
+                    ledMode=LED_OFF;
+                }
                 LOG_DEBUG(GwLog::LOG,"Button press stopped");
             }
             continue;
@@ -72,6 +78,17 @@ void handleButtons(void *param){
             LOG_DEBUG(GwLog::LOG,"Button active for %ld",(now-firstPressed));
             lastReport=now;
         }
+        GwLedMode nextMode=ledMode;
+        if (now > (firstPressed+HARD_REST_TIME/2)){
+            nextMode=LED_BLUE;
+        }
+        if (now > (firstPressed+HARD_REST_TIME*0.9)){
+            nextMode=LED_RED;
+        }
+        if (ledMode != nextMode){
+            setLedMode(nextMode);
+            ledMode=nextMode;
+        }
         if (now > (firstPressed+HARD_REST_TIME)){
             LOG_DEBUG(GwLog::ERROR,"Factory reset by button");
             GwMessage *r=new FactoryResetRequest(api);

lib/hardware/GwHardware.h

@@ -26,10 +26,32 @@
 #define GWBUTTON_PIN GPIO_NUM_39
 #define GWBUTTON_ACTIVE LOW
 //if GWBUTTON_PULLUPDOWN we enable a pulup/pulldown
-#define GWBUTTON_PULLUPDOWN 
+#define GWBUTTON_PULLUPDOWN
+//led handling
+//if we define GWLED_FASTNET the arduino fastnet lib is used
+#define GWLED_FASTLED
+#define GWLED_TYPE SK6812
+//color schema for fastled
+#define GWLED_SCHEMA GRB
+#define GWLED_PIN  GPIO_NUM_27
+//brightness 0...255
+#define GWLED_BRIGHTNESS 64
 #elif BOARD_M5ATOM_CANUNIT
 #define ESP32_CAN_TX_PIN GPIO_NUM_26
 #define ESP32_CAN_RX_PIN GPIO_NUM_32
+#define GWBUTTON_PIN GPIO_NUM_39
+#define GWBUTTON_ACTIVE LOW
+//if GWBUTTON_PULLUPDOWN we enable a pulup/pulldown
+#define GWBUTTON_PULLUPDOWN 
+//led handling
+//if we define GWLED_FASTNET the arduino fastnet lib is used
+#define GWLED_FASTLED
+#define GWLED_TYPE SK6812
+//color schema for fastled
+#define GWLED_SCHEMA GRB
+#define GWLED_PIN  GPIO_NUM_27
+//brightness 0...255
+#define GWLED_BRIGHTNESS 64
 #elif BOARD_M5STICK_CANUNIT
 #define ESP32_CAN_TX_PIN GPIO_NUM_32
 #define ESP32_CAN_RX_PIN GPIO_NUM_33

lib/led/GwLeds.cpp

@@ -0,0 +1,60 @@
+#include "GwLeds.h"
+#include "GwHardware.h"
+#include "GwApi.h"
+#include "FastLED.h"
+
+static GwLedMode mode=LED_OFF;
+void setLedMode(GwLedMode newMode){
+    //we consider the mode to an atomic item...
+    mode=newMode;
+}
+
+static CRGB::HTMLColorCode colorFromMode(GwLedMode cmode){
+    switch(cmode){
+        case LED_BLUE:
+            return CRGB::Blue;    
+        case LED_GREEN:
+            return CRGB::Green;
+        case LED_RED:
+            return CRGB::Red;
+        case LED_WHITE:
+            return CRGB::White;        
+        default:
+            return CRGB::Black;    
+    }
+}
+void handleLeds(void *param){
+    GwApi *api=(GwApi*)param;
+    GwLog *logger=api->getLogger();
+    #ifndef GWLED_FASTLED
+        LOG_DEBUG(GwLog::LOG,"currently only fastled handling");
+        vTaskDelete(NULL);
+        return;
+    #else
+    CRGB leds[1];
+    #ifdef GWLED_SCHEMA
+    FastLED.addLeds<GWLED_TYPE,GWLED_PIN,GWLED_SCHEMA>(leds,1);
+    #else
+    FastLED.addLeds<GWLED_TYPE,GWLED_PIN>(leds,1);
+    #endif
+    #ifdef GWLED_BRIGHTNESS
+    uint8_t brightness=GWLED_BRIGHTNESS;
+    #else
+    uint8_t brightness=128; //50%
+    #endif
+    GwLedMode currentMode=mode;
+    leds[0]=colorFromMode(currentMode);
+    FastLED.setBrightness(brightness);
+    FastLED.show();
+    while(true){
+        delay(50);
+        GwLedMode newMode=mode;
+        if (newMode != currentMode){
+            leds[0]=colorFromMode(newMode);
+            FastLED.show();
+            currentMode=newMode;
+        }
+    }
+    vTaskDelete(NULL);
+    #endif
+}

lib/led/GwLeds.h

@@ -0,0 +1,13 @@
+#ifndef _GWLEDS_H
+#define _GWLEDS_H
+//task function
+void handleLeds(void *param);
+typedef enum {
+    LED_OFF,
+    LED_GREEN,
+    LED_BLUE,
+    LED_RED,
+    LED_WHITE
+} GwLedMode;
+void setLedMode(GwLedMode mode);
+#endif